SB2020040914 - Improper access control in Gutenberg Blocks - Ultimate Addons for Gutenberg plugin for WordPress

Description

This security bulletin contains information about 1 vulnerability.

1) Improper access control (CVE-ID: N/A)

CWE-ID: CWE-284 - Improper Access Control

CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to improper access restrictions in several AJAX actions in the "ultimate-addons-for-gutenberg/classes/class-uagb-admin.php" script. A remote authenticated attacker can send a $_POST['page'] = 'uag' to the current page and interact with all six AJAX actions, leading to settings change.

This vulnerability affects the following AJAX actions:

• uagb_activate_widget
• uagb_deactivate_widget
• uagb_bulk_activate_widgets
• uagb_bulk_deactivate_widgets
• uagb_allow_beta_updates
• uagb_file_generation

Remediation

Install update from vendor's website.

References

• https://wpvulndb.com/vulnerabilities/10170/
• https://blog.nintechnet.com/wordpress-ultimate-addons-for-gutenberg-plugin-fixed-vulnerability/